1 pts Question 2 For a laboratory investigation, a student is instructed to plac

Question

1 pts Question 2 For a laboratory investigation, a student is instructed to place a 2.4-g sample of magnesium ribbon into 500 mL of a 2.0 M solution of hy- drochloric acid. The student then records the following observations: 1) The magnesium ribbon is a bright, shiny, silvery metal. 2) The hydrochloric acid is clear and colorless with no detectable odor 3) As soon as the magnesium ribbon is dropped into the hydro- chloric acid: a. bubbles form, b a sizzling sound is heard, and c a clear, colorless gas with no detectable odor appears to be coming from the reaction vessel 4) After 32 scconds, the magnesium ribbon has completely disappeared. 5) There appears to be only a clear, colorless solution after the reaction has taken place. investigation O Magnesium is being reduced, and the hydrogen ion is being oxidized. O Magnesium is being oxidized, and the chloride ion is being reduced. O Magnesium is being oxidized, and the hydrogen ion is being reduced. O Magnesium is being reduced, and the chloride ion is being oxidized. Identify which substance is being oxidized and which substance is being reduced in this laboratory

Explanation / Answer

Magnesium reacts with hydrochloric acid according to the equation: Mg(s) + 2 HCl(aq) --> MgCl 2(aq) + H2(g) .

so the correct option is

Magnesium is being oxidized and the hydrogen ion is being reduced.

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